:root{--ink: #0f1117;--ink-2: #3a3d4a;--muted: #8b8fa8;--bg: #f5f5f8;--surface: #fff;--surface-2: #ecedf2;--border: #e0e1ea;--accent: #1a56ff;--accent-soft: #e8eeff;--accent-2: #0032d6;--green: #0fa968;--green-soft: #e4f7ef;--red: #ef4444;--r: 12px;--r2: 8px}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif}button{cursor:pointer;font:inherit}input,select,textarea{font:inherit}a{color:var(--accent);text-decoration:none}#app{min-height:100vh;display:flex;flex-direction:column}.nav{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 28px;background:var(--surface);border-bottom:1px solid var(--border)}.nav-logo{font-size:18px;font-weight:700;letter-spacing:-.5px;color:inherit}.nav-logo span{color:var(--accent)}.nav-actions{display:flex;gap:10px}.btn{padding:8px 18px;border-radius:var(--r2);border:1.5px solid 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var(--border);border-radius:var(--r)}.countdown{font-size:52px;font-weight:800;letter-spacing:-2px;margin:20px 0 8px;font-variant-numeric:tabular-nums;color:var(--ink)}.prejoin h2{font-size:20px;margin-bottom:4px}.prejoin .room-id{color:var(--muted);font-family:ui-monospace,monospace;font-size:12px;margin-bottom:20px}.prejoin video{width:100%;aspect-ratio:16/9;background:#1a1d2a;border-radius:var(--r2);margin-bottom:16px;object-fit:cover}.prejoin .device-row{display:flex;gap:8px;margin-bottom:12px}.toggle-pill{padding:7px 14px;border-radius:20px;border:1.5px solid var(--border);background:var(--surface);font-size:12px;font-weight:600;color:var(--muted)}.toggle-pill.on{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.room{flex:1;display:flex;flex-direction:column;background:#0f1117;color:#fff}.room-bar{display:flex;align-items:center;justify-content:space-between;padding:0 18px;height:48px;border-bottom:1px solid 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#1e2030}.ctrl{display:flex;flex-direction:column;align-items:center;gap:4px}.ctrl-btn{width:44px;height:44px;border:none;border-radius:50%;background:#252836;color:#fff;display:flex;align-items:center;justify-content:center}.ctrl-btn:hover{background:#323549}.ctrl-btn.active{background:var(--accent)}.ctrl-btn.danger{background:var(--red)}.ctrl-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.ctrl-label{font-size:10px;color:#6b7280}.chat-panel{width:300px;background:#14161e;border-left:1px solid #1e2030;display:flex;flex-direction:column}.chat-panel.hidden{display:none}.chat-header{padding:12px 16px;border-bottom:1px solid #1e2030;font-size:13px;font-weight:600}.chat-msgs{flex:1;overflow-y:auto;padding:12px 16px;display:flex;flex-direction:column;gap:10px}.chat-msg{font-size:13px;line-height:1.4}.chat-msg .from{color:var(--accent);font-weight:600;margin-right:6px}.chat-msg .ts{color:#6b7280;font-size:10px;margin-left:6px}.chat-input-row{padding:10px 12px;border-top:1px solid #1e2030;display:flex;gap:8px;align-items:center}.chat-input-row input{flex:1;padding:8px 12px;border:1px solid #2a2d3d;background:#1a1d2a;color:#fff;border-radius:var(--r2);font-size:13px;outline:none}.chat-input-row input:focus{border-color:var(--accent)}.chat-input-row button{padding:8px 14px;border:none;border-radius:var(--r2);background:var(--accent);color:#fff;font-size:12px;font-weight:600}.chat-attach-btn{padding:6px!important;background:transparent!important;color:#8b8fa8!important;border:1px solid #2a2d3d!important;display:flex;align-items:center;justify-content:center;flex-shrink:0}.chat-attach-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.chat-attach-btn:hover{color:#fff!important;border-color:var(--accent)!important}.chat-file{display:flex;flex-wrap:wrap;align-items:center;gap:4px}.chat-file-link{color:var(--accent);text-decoration:none;font-weight:500}.chat-file-link:hover{text-decoration:underline}.chat-file-size{color:#6b7280;font-size:11px}@media (max-width: 700px){.room-main{flex-direction:column}.chat-panel{width:100%;height:240px;border-left:none;border-top:1px solid #1e2030}.settings-panel{width:100%;height:260px;border-left:none;border-top:1px solid #1e2030}.video-grid.g3,.video-grid.g4,.video-grid.g5,.video-grid.g6{grid-template-columns:1fr 1fr}.pos-bottom .thumbnail-strip{height:80px}.pos-left .thumbnail-strip,.pos-right .thumbnail-strip{width:120px}}@media (max-width: 540px){.nav{padding:0 16px}.page{padding:12px}.sched-card{padding:16px}.row2{grid-template-columns:1fr}.hero{margin:12px 0 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